function GetMuList(){
    var json = {};
    var httpReq = new XMLHttpRequest();
    httpReq.open('GET','http://127.0.0.1:2000/getlist',true);
    httpReq.send();
    httpReq.onreadystatechange = function(){
        if(httpReq.readyState == 4 && httpReq.status == 200){
            json = httpReq.responseText;
            console.log(json)
            return json;
        }
    }
}